Display device

ABSTRACT

A display device is provided. The display device comprising: a display area; a non-display area on an outer side of the display area; a data line unit comprising a plurality of data lines; a power line unit disposed over the plurality of data lines and comprising a plurality of power lines; and a touch line unit disposed over the power line unit, comprising a plurality of touch lines and comprising a fan-out portion, wherein the touch line unit comprises, in the fan-out portion, a plurality of first sub-touch line units extended toward one side in a first direction, and a plurality of second sub-touch line units extended toward an opposite side in the first direction, wherein a number of lines of the first sub-touch line units is equal to a number of lines of the second sub-touch line units, and wherein the touch line unit comprises a portion where the touch line unit overlaps with the power line unit.

This application claims priority from Korean Patent Application No.10-2018-0118760, filed on Oct. 5, 2018, in the Korean IntellectualProperty Office, and all the benefits accruing therefrom under 35 U.S.C.§ 119, the disclosure of which is incorporated herein by reference inits entirety.

BACKGROUND 1. Field of the Disclosure

The present disclosure relates to a display device. More specifically,the present disclosure relates to a layout design of lines in a displaydevice.

2. Description of the Related Art

Display devices become more and more important as multimedia technologyevolves. Accordingly, a variety of types of display devices such asliquid-crystal display (LCD) devices and organic light-emitting display(OLED) devices are currently used. Among them, organic light-emittingdisplay devices are self-luminous devices having excellent viewingangles and thus are attracting attention as next generation displaydevices.

A driver unit for driving the pixel circuits in the display area may bedisposed in the non-display area under the display panel. When the widthof the driver unit is different from the width of the display panel inthe horizontal direction, signal lines connecting the driver unit withthe display panel may be disposed in the non-display area. Thenon-display area can be regarded as a sort of dead space in terms of thefunction of the display device. In order to reduce the dead space,various types of line designs may be required.

SUMMARY

Aspects of the present disclosure provide a display device with fan-outconfiguration in its non-display area NDA, thereby reducing the deadspace.

It should be noted that objects of the present disclosure are notlimited to the above-mentioned object; and other objects of the presentdisclosure will be apparent to those skilled in the art from thefollowing descriptions.

According to an exemplary embodiment of the present disclosure, touchsignal lines fan out, so that the dead space can be reduced.

However, aspects of the present disclosure are not restricted to the oneset forth herein. The above and other aspects of the present disclosurewill become more apparent to one of ordinary skill in the art to whichthe present disclosure pertains by referencing the detailed descriptionof the present disclosure given below.

According to an exemplary embodiment of the present disclosure, adisplay device comprising: a display area; a non-display area on anouter side of the display area; a data line unit comprising a pluralityof data lines; a power line unit disposed over the plurality of datalines and comprising a plurality of power lines; and a touch line unitdisposed over the power line unit, comprising a plurality of touch linesand comprising a fan-out portion, wherein the touch line unit comprises,in the fan-out portion, a plurality of first sub-touch line unitsextended toward one side in a first direction, and a plurality of secondsub-touch line units extended toward an opposite side in the firstdirection, wherein a number of lines of the first sub-touch line unitsis equal to a number of lines of the second sub-touch line units, andwherein the touch line unit comprises a portion where the touch lineunit overlaps with the power line unit.

In an exemplary embodiment, wherein the touch line unit and the powerline unit are extended in a second direction intersecting the firstdirection in the portion where the touch line unit overlaps with thepower line unit.

In an exemplary embodiment, wherein the portion where the touch lineunit overlaps with the power line unit is located on an inner side ofthe data line unit.

In an exemplary embodiment, the display device further comprises acommon electrode formed over an entire surface of the display area,wherein the common electrode is extended to the non-display area.

In an exemplary embodiment, wherein a region where the common electrodeis formed comprises the fan-out portion.

In an exemplary embodiment, wherein the common electrode comprises anedge formed in the first direction, wherein the plurality of firstsub-touch line units comprises a first touch line closest to the edge inthe fan-out portion, wherein the plurality of second sub-touch lineunits comprises a second touch line closest to the edge in the fan-outportion, and wherein a distance between the first touch line and theedge is equal to a distance between the second touch line and thedevice.

In an exemplary embodiment, wherein the distance is equal to or greaterthan 72 μm.

In an exemplary embodiment, wherein the common electrode is electricallyconnected to at least one power line among the power line unit.

In an exemplary embodiment, the display device further comprises a datapad terminal unit connected to the data lines; a power pad terminal unitconnected to the power lines; and a touch pad terminal unit connected tothe touch lines, wherein the touch pad terminal unit, the power padterminal unit, and the data pad terminal unit are sequentially spacedapart from one another in the first direction.

In an exemplary embodiment, wherein the data lines are extended in asecond direction intersecting the first direction from the data padterminal unit, and wherein the touch lines comprise a portion extendedin the second direction and a portion bent toward the data line unit.

In an exemplary embodiment, wherein the display device comprises aregion adjacent to one edge of the non-display area, where the data padterminal unit, the power pad terminal unit and the touch pad terminalunit are formed, and wherein the display device comprises a bendingregion between the display area and the region where the data padterminal unit, the power pad terminal unit and the touch pad terminalunit are formed.

In an exemplary embodiment, wherein the display device comprises in thebending region a region where the touch line unit overlaps with thepower line unit.

In an exemplary embodiment, the display device further comprises aplurality of touch sensing electrodes disposed in the display area,wherein the plurality of touch sensing electrodes comprises: a pluralityof first touch sensing electrodes extended in a predetermined direction;and a plurality of second touch sensing electrodes disposed adjacent tothe first touch sensing electrodes in a direction intersecting thedirection in which the plurality of first touch sensing electrodes isextended, wherein a width of the second touch sensing electrodes issmaller than a width of the first touch sensing electrodes, and whereinthe plurality of first touch sensing electrodes and the plurality ofsecond touch sensing electrodes are electrically connected to therespective touch lines.

In an exemplary embodiment, wherein the plurality of second touchsensing electrodes is extended in a same direction as a direction inwhich the plurality of first touch sensing electrodes is extended.

In an exemplary embodiment, wherein the plurality of second touchsensing electrodes is extended in a second direction intersecting thefirst direction.

According to another exemplary embodiment of the present disclosure, adisplay device comprising: a base substrate comprising a display areawhere a plurality of pixels and a plurality of touch electrodes aredisposed, and a non-display area on an outer side of the display area; afirst line layer disposed on the base substrate in the non-display area;a second line layer disposed over the first line layer in thenon-display area; and a third line layer disposed over the second linelayer in the non-display area and comprising a fan-out portion, whereinthe second line layer and the third line layer comprise an overlappingregion in the non-display area, wherein each of the pixels comprises atransistor and a light-emitting element connected to the transistor,wherein the first line layer is electrically connected to thetransistor, wherein the second line layer is electrically connected tothe light-emitting element, wherein the third line layer is electricallyconnected to the touch electrode, wherein the third line layercomprises, in the fan-out portion, a plurality of first sub-line unitunits extended toward one side in a first direction, and a plurality ofsecond sub-line unit units extended toward an opposite side in the firstdirection, and wherein a number of the first sub-line unit units isequal to a number of the second sub-line unit.

In an exemplary embodiment, wherein the first line layer, the secondline layer and the third line layer are insulated from one another.

In an exemplary embodiment, wherein in a region where the secondconductive layer overlaps with the third conductive layer, the secondconductive layer and the third conductive layer are extended in a seconddirection intersecting the first direction.

In an exemplary embodiment, wherein the touch electrodes comprise: aplurality of first sensing electrodes extended in the first direction;and a plurality of second sensing electrodes extended in the seconddirection and traversing the first sensing electrodes, wherein the firstsensing electrodes are insulated from the second sensing electrodes.

In an exemplary embodiment, wherein the light-emitting element comprisesa first electrode, an emissive layer disposed on the first electrode,and a second electrode disposed on the emissive layer, wherein thesecond electrode is disposed through an entire surface of the displayarea, wherein the second electrode is extended so that the third linelayer covers the fan-out portion, and wherein the second line layer iselectrically connected to the second electrode.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects and features of the present disclosure willbecome more apparent by describing in detail exemplary embodimentsthereof with reference to the attached drawings, in which:

FIG. 1 is a plan view of a display device according to an exemplaryembodiment of the present disclosure;.

FIG. 2 is a cross-sectional view of a part of a display device accordingto an exemplary embodiment of the present disclosure;

FIG. 3 is a view showing a layout of the portion 10 a of the displaypanel of FIG. 1 in more detail;

FIG. 4 is an enlarged view of portion FF1 of FIG. 3;

FIG. 5 is an enlarged view of portion FF2 of FIG. 3;

FIG. 6 is a cross-sectional view taken along line I1-I1′ of FIG. 4;

FIG. 7 is a cross-sectional view taken along line I2-I2′ of FIG. 5;

FIG. 8 is a view showing a layout of portion 10 b of the display panelof FIG. 1 in more detail;

FIG. 9 is a cross-sectional view of the organic light-emitting displaydevice, taken along line I3-I3′ of FIG. 8;

FIG. 10 is a view showing a layout of input sensing units of an organiclight-emitting display device according to another exemplary embodimentof the present disclosure;

FIG. 11 is a view showing a layout of an input sensing unit of anorganic light-emitting display device according to yet another exemplaryembodiment of the present disclosure; and

FIG. 12 is a view showing arrangement of lines in a non-display area ofan organic light-emitting display device according to yet anotherexemplary embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present disclosure will now be described more fully hereinafter withreference to the accompanying drawings, in which preferred embodimentsof the invention are shown. This invention may, however, be embodied indifferent forms and should not be construed as limited to theembodiments set forth herein. Rather, these embodiments are provided sothat this disclosure will be thorough and complete, and will fillyconvey the scope of the invention to those skilled in the art.

It will also be understood that when a layer is referred to as being“on” another layer or substrate, it can be directly on the other layeror substrate, or intervening layers may also be present. The samereference numbers indicate the same components throughout thespecification.

Display devices according to a variety of exemplary embodiments of thepresent disclosure may be used as a display screen of a variety ofdevices that present video or still image or stereoscopic displaydevices, including portable electronic devices such as a mobilecommunications terminal, a smart phone, a tablet PC, a smart watch and anavigation device, as well as devices such as a television, a laptopcomputer, a monitor, an electronic billboard and a device for theInternet of Things.

Hereinafter, embodiments of the present disclosure will be described indetail with reference to the accompanying drawings. In the followingdescription, an organic light-emitting display device will be describedas an example of a display device. It is, however, to be understood thatthe present disclosure is not limited thereto. The display deviceaccording to exemplary embodiments of the present disclosure can also beapplied to other display devices such as a liquid-crystal display deviceand a field emission display device, without departing from the scope ofthe present disclosure. Like reference numerals denote like elementsthroughout the drawings.

FIG. 1 is a plan view of a display device according to an exemplaryembodiment of the present disclosure. FIG. 2 is a cross-sectional viewof a part of a display device according to an exemplary embodiment ofthe present disclosure.

An organic light-emitting display device 1 may include a display panel10. The display panel 10 may include a flexible substrate including aflexible polymer material such as polyimide. Accordingly, the displaypanel 10 may be curved, bent, folded, or rolled.

The display panel 10 may include a main region MR and a panel bendingregion BD connected to one side of the main region MR. The display panel10 may further include a sub-region SR connected to the panel bendingregion BD and overlapped with the main region MR in the thicknessdirection.

The area of the display panel 10 where images are displayed is definedas a display area DA. The area of the display panel 10 where no image isdisplayed is defined as a non-display area NDA. The display area DA ofthe display panel 10 is disposed in the main region MR. The other areathan the display area DPA serves as the non-display area NDA of thedisplay panel 10. In an exemplary embodiment, in the main region MR, theedge portions of the display area DA, the entire panel bending region BDand the entire sub-region SR may be the non-display area NDA. It is,however, to be understood that the present disclosure is not limitedthereto. The panel bending region BD and/or the sub-region SR may alsoinclude the display area DA.

The main region MR may have a shape generally similar to that of theorganic light-emitting display device 1 when viewed from the top. Themain region MR may be a flat area located in one plane. It is, however,to be understood that the present disclosure is not limited thereto. Atleast one of the edges of the main region MR except for the edge (side)connected to the panel bending region BD may be bent to form a curvedsurface or may be bent at a right angle.

The display area DA of the display panel 10 may be disposed at thecenter of the main region MR. The display area DA is defined as the areafor displaying an image. the display area DA may also be used as anelement for detecting an external environment. That is to say, thedisplay area DA may be used as the area for displaying images and alsoas the area for recognizing a user's touch input or fingerprint. In anexemplary embodiment, the display area DA may have a flat shape. It is,however, to be understood that the present disclosure is not limitedthereto. The display area DA may be bent at least partially. In suchcase, at least one of the edges of the display area DA in the mainregion MR except for the edge (side) connected to the panel bendingregion BD may be bent to form a curved surface or may be bent at a rightangle.

In an exemplary embodiment, the display area DA may have a rectangularshape. For example, the display area DA may have a rectangular shapehaving shorter sides in a first direction dr1 and longer sides extendedin a second direction dr2 intersecting the first direction dr1. It is,however, to be understood that the present disclosure is not limitedthereto. The display area DA may have a polygonal shape, a circularshape, or an irregular shape. As used herein, for convenience ofillustration, the horizontal direction in the drawings is defined as thefirst direction dr1, and the direction intersecting the first directiondr1 is defined as the second direction dr2. That is to say, the seconddirection dr2 may represent the vertical direction in the drawings. Itis to be noted that the exemplary embodiments of the present disclosureare not limited by the directions defined above and the first and seconddirections dr1 and dr2 may be any relative directions intersecting eachother.

The display area DA may include a plurality of pixels. Each of thepixels may include an emissive layer and a circuit layer for controllingthe amount of light emitted from the emissive layer. The circuit layermay include a variety of lines, electrodes and at least one transistor.The emissive layer may include an \organic light-emitting material. Theemissive layer may be sealed by an encapsulation layer. Theconfiguration of each of the pixels will be described in detail later.

The display area DA may include a plurality of touch sensing electrodes.The plurality of touch sensing electrodes may include driving electrodesand sensing electrodes. The driving electrodes and the sensingelectrodes may be disposed on the same layer but are not limitedthereto. They may be disposed on different layers. The plurality oftouch sensing electrodes may be disposed on the encapsulation layer 131.The touch sensing electrodes will be described later.

The non-display area NDA is defined as the area that is disposed outsidethe display area DA and does not display an image. In an exemplaryembodiment, the non-display area NDA may be disposed outside the displayarea DA to surround it. It is, however, to be understood that thepresent disclosure is not limited thereto. The shape of the display areaDA and the shape of the non-display area NDA may be designed relatively.In an exemplary embodiment, the non-display area NDA may have a flatshape. It is, however, to be understood that the present disclosure isnot limited thereto. The non-display area NDA may have a shape that isbent at least partially.

In the main region MR, the non-display area NDA may be located aroundthe display area DA. In the main region MR, the non-display area NDA maybe extended from the outer border of the display area DA to the edge ofthe display panel 10. In the non-display area NDA of the main region MR,signal lines for applying signals to the display area DA or drivingcircuits may be disposed. The outermost black matrix may be, but is notlimited to being, disposed in the non-display area NDA of the mainregion MR.

Although not shown in the drawings, a speaker module, a microphonemodule, a camera module, a sensor module, etc. may be disposed in thenon-display area NDA. In an exemplary embodiment, the sensor module mayinclude at least one of an illuminance sensor, a proximity sensor, aninfrared sensor, and an ultrasonic sensor.

The panel bending region BD is connected to the main region MR. Forexample, the panel bending region BD may be connected to a shorter sideof the main region MR. The width of the panel bending region BD may beless than the width (width of a shorter side) of the main region MR. Theportions where the main region MR meets the panel bending region BD maybe cut in an L-shape.

In the panel bending region BD, the display panel 10 may be bentdownward in the thickness direction, i.e., in the direction away fromthe display surface with a curvature. Although the panel bending regionBD may have a constant radius of curvature, the present disclosure isnot limited thereto. It may have different radii of curvature fordifference sections. As the display panel 10 is bent in the panelbending region BD, the surface of the display panel 10 is turned over.Specifically, the surface of the display panel 10 facing upward may bebent such that it faces outward in the panel bending region BD and thenfaces downward.

The sub-region SR is extended from the panel bending region BD. Thesub-region SR may be extended in a direction parallel to the main regionMR after the display device has been bent. The sub-region SR may overlapwith the main region MR in the thickness direction of the display panel10. The sub-region SR may overlap with the non-display area NDA at theedge of the main region MR and may also overlap with the display area DAof the main region MR.

The width of the sub-region SR may be, but is not limited to being,equal to the width of the panel bending region BD.

A drive chip 20 may be disposed on the sub-region SR of the displaypanel 10. The drive chip 20 may include an integrated circuit fordriving the display panel 10. In an exemplary embodiment, the integratedcircuit may be, but is not limited to, a data driving integrated circuitthat generates and provides data signals. The drive chip 20 may bemounted on the display panel 10 in the sub-region SR. The drive chip 20is mounted on the surface of the display panel 10 which is the displaysurface. As the panel bending region BD is bent and turned over asdescribed above, the drive chip 20 is mounted on the surface of thedisplay panel 10 facing downward in the thickness direction, such thatthe upper surface of the drive chip 20 may face downward.

The drive chip 20 may be attached on the display panel 10 by ananisotropic conductive film or on the display panel 10 by ultrasonicbonding. The width of the drive chip 20 may be less than the width ofthe display panel 10 in the horizontal direction. The drive chip 20 isdisposed at the center of the sub-region SR in the horizontal directionand the left and right edges of the drive chip 20 may be spaced apartfrom the left and right edges of the sub-region SR, respectively.

A pad unit PD may be formed at the end of the sub-region SR of thedisplay panel 10, and a display driving substrate 30 may be connected onthe pad unit PD. The display driving substrate 30 may be a flexibleprinted circuit board or film.

Signal lines may be disposed in the sub-region SR, the panel bendingregion BD and the main region MR of the display panel 10. The signallines may be extended from the pad unit PD in the sub-region SR to themain region MR via the panel bending region BD. Some of the signallines, e.g., power lines SP and touch lines TP may be extended from theend of the pad unit PD in the sub-region SR to the panel bending regionBD and in turn to the main region MR without passing through the drivechip 20. Some others of the signal lines e.g., data signal lines may beextended from the end of the pad unit PD to the panel bending region BRand in turn to the main region MR through the drive chip 20.

In order to cover the entire main region MR which is relatively large,some of the signal lines may fan out so that they spread out toward themain region MR from the sub-region SR and/or the panel bending regionBD. Some of the signal lines which bypass the drive chip 20 may beextended along the outer sides of the signal lines passing through thedrive chip 20.

The signal lines passing through the panel bending region BD are benttogether with the panel, and accordingly the signal lines may besubjected to bending stress. Such bending stress may cause cracks ordisconnection of the signal lines. To prevent this, the signal linespassing through the panel bending region BD may be formed of a moreflexible material. In addition, the signal lines passing through thepanel bending region BD may have a multi-path structure in whichmultiple line layers are electrically connected with one another throughcontacts in the vertical direction so that even when one line layer isdisconnected, a signal can be transmitted through another line layerelectrically connected thereto.

Hereinafter, the relationship among the signal lines arranged thereinwill be described. In the following description, an edge portion 10 awhich is a part of the non-display region NDA of the display panel 10and is adjacent to the pad unit PD, and a rest portion 10 b which is thedisplay area DA and the rest part of the non-display region NDA of thedisplay panel 10 are defined for convenience of illustration.

FIG. 3 is a view showing a layout of the portion 10 a of the displaypanel of FIG. 1 in more detail. FIG. 4 is an enlarged view of portionFF1 of FIG. 3. FIG. 5 is an enlarged view of portion FF2 of FIG. 3. FIG.6 is a cross-sectional view taken along line I1-I1′ of FIG. 4. FIG. 7 isa cross-sectional view taken along line I2-I2′ of FIG. 5.

Referring to FIGS. 3 to 7, the display panel 10 may include a pluralityof touch lines TP, a plurality of power lines SP, and a plurality ofdata lines DP.

The display panel 10 includes a base substrate 101, first line layersDP1_1 to DP1_10 disposed on the base substrate 101, a first lineinsulating layer 210 disposed on the first line layers DP1_1 to DP1_10,second line layers SP1_1 to SP1_11 disposed on the first line insulatinglayer 210, a second line insulating layer 220 disposed on the secondline layers SP1_1 to SP1_11, third line layers TP1_1 to TP1_10 disposedon the second line insulating layer 220, and a third line insulatinglayer 230 disposed on the third line layers TP1_1 to TP1_10. A bufferlayer or another insulating layer may be further disposed between thebase substrate 101 and the first line layers DP1_1 to DP1_10.

Each of the touch lines TP, each of the power lines SP and each of thedata lines DP may be extended from the respective pad terminals includedin the pad unit PD. The pad unit PD may be disposed in the vicinity ofone edge of the display panel 10 in the second direction dr2. In anexemplary embodiment, the pad unit PD may be disposed at the outermostside in the second direction dr2 and may include pad terminals connectedto the touch lines TP. In addition, the pad unit PD may include padterminal connected to the power lines SP and pad terminals connected tothe data lines DP toward the inside.

The plurality of signal lines extended from the pad terminals may beextended generally in the second direction dr2. On the other hand, amongthe plurality of signal lines extended from the pad terminals, the touchlines TP and the power lines SP may be arranged so as to generallyoverlap with one another and may be extended in the second directiondr2. The touch lines TP and the power lines SP may be insulated from oneanother where they overlap with one another. The touch lines TP and thepower lines SP may overlap with one another in the sub-region SR and thepanel bending region BD of the display panel 10.

The pad terminals may be are spaced apart from one another in the firstdirection dr1. The touch lines TP and the power lines SP may be parallelto one another where they are extended from the pad terminals. In orderto dispose the touch lines TP and the power lines SP so that theygenerally overlap with one another, the touch lines TP may include bentportions toward the power lines SP.

Specifically, the plurality of signal lines may include a first touchline unit TP1 disposed on one side in the first direction dr1, adjacentto the pad unit PD in the second direction dr2. The plurality of signallines may include a first power line unit SP1, a first data line unitDP, a second touch line unit TP2, and a second power line unit SP2spaced apart from the first touch line unit TP1 in the first directiondr1 in this order.

The pad terminals may be formed on the same layer. The signal lines maybe electrically connected to the first line layers DP1_1 to DP1_10 tothe third line layers TP1_1 to TP1_10 through the pad terminals and thecontact holes. For example, the data lines DP may be connected to thefirst line layers DP1_1 to DP1_10 through the contact holes, the powerlines SP may be connected to the second line layers SP1__1 to SP1_11through the contact holes, and the touch lines TP may be connected tothe third line layers TP1_1 to TP1_10 through the contact holes.

The first line layers DP1_1 to DP1_10 to the third line layers TP1_1 toTP1_10 are sequentially stacked from the base substrate 101 and mayinclude an insulating layer between every two of the line layers. Inother exemplary embodiments, the first line layers DP1_1 to DP1_10 maybe formed on the same layer as the pad terminals. In such case, they maybe connected directly to the pad terminals without passing through thecontact holes.

The first touch line unit TP1 may include a portion overlapping with thefirst power line unit SP1. The second touch line unit TP2 may include aportion overlapping with the second power line unit SP2 and may becontinuously extended in the second direction dr2 so as to include aportion overlapping with a common electrode CE disposed in the mainregion MR.

The lines of the touch line unit TP extended in the second direction dr2may fan out where they overlap with the common electrode CE in thenon-display area NDA. In each of the first and second touch line unitsTP1 and TP2, the number of lines TP1 a and TP2 a that fan out toward oneside in the first direction dr1 may be equal to the number of lines TP1b and TP2 b and fan out toward the opposite side in the first directiondr1, respectively.

In the example shown in FIG. 4 where the first touch line unit TP1includes the first to tenth touch lines TP1_1 to TP1_10, the touch linesTP are extended from the respective pad terminals in the seconddirection dr2, include a portion that is bent such that they overlapwith the first power line unit SP1, and are extended in the seconddirection dr2 where they overlap with the first power line unit SP1. Thetouch lines TP may be extended in the second direction dr2 until theyreach the common electrode CE disposed in the main region. The first tofifth touch lines TP1_1 to TP1__5 may be extended beyond one edge of thecommon electrode CE to be extended in the second direction dr2 and mayfan out generally toward one side in the first direction dr1. The sixthto tenth touch lines TP1__6 to TP1_10 may be extended beyond one edge ofthe common electrode CE to be extended in the second direction dr2 andmay fan out generally toward the opposite side in the first directiondr1. The distance TPW1 between the first touch line TP1_1 and one edgeof the common electrode CE may be equal to the distance TPW2 between thetenth touch line TP1_10 and the edge of the common electrode CE. In anexemplary embodiment, the distances TPW1 and TPW2 may be equal to orgreater than 72 μm.

As the touch line unit TP fans out as described above, the distancebetween the edge of the common electrode CE and the fan-out touch lineunit TP can be reduced. As a result, the dead space of the organiclight-emitting display device 1 can be reduced.

The third line layer TP1_1 to TP1_10 may be formed of indium-tin-oxide(ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In₂O₃),indium gallium oxide (IGO), aluminum zinc oxide (AZO), silver (Ag),magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au),nickel (Ni), neodymium (Nd), iridium (Jr), chromium (Cr), calcium (Ca),silicon (Si), sodium (Na), tungsten (W), or combinations thereof. In anexemplary embodiment, the third line layers TP1_1 to TP1_10 may includethe respective touch line units TP.

The lines of the power line unit SP may be extended from the respectivepad terminals in the second direction dr2 in the sub-region SR and thepanel bending region BD and may be electrically connected to a firstpixel electrode 121 (see FIG. 9) and a second pixel electrode 123 (seeFIG. 9) of each pixel in the main region to supply voltage signal. Thesecond pixel electrode 123 may be electrically connected to an electrodeof the light-emitting element.

The power line unit SP may overlap with the touch line unit TP in acertain region, where the power line layer SP may be disposed betweenthe data line layer DP and the touch line layer TP. An insulating layermay be disposed among the data line DP layer, the power line SP layerand the touch line layer TP so that they are insulated from one another.The power line unit SP may be used to reduce the influence by a noisesignal generated in the data lines DP on the touch lines TP and theinfluence by a noise signal generated in the touch lines TP on the datalines DP.

The second line layers SP1_1 to SP1_11 may be formed of an appropriateconductive material such as molybdenum (Mo), nickel (Ni), chromium (Cr),tungsten (W), silver (Ag), gold (Au), titanium (Ti), copper (Cu),aluminum (Al) and neodymium (μl-Nd), or an alloy thereof, and may bemade up of a dual layer including Mo/Al-μl-Nd, Mo/Al, Ti/Al, etc., and amulti-layer structure such as Mo/Al/Mo, Mo/Al-μl-Nd/Mo, Ti/Al/Ti andTi/Cu/Ti. Furthermore, the second line layers SP1_1 to SP1_11 may beformed of silver nanowire. In an exemplary embodiment, the second linelayers SP1_1 to SP1_11 may include respective power line units SP. In anexemplary embodiment, the data line unit DP may be disposed more to theinside than the touch line unit TP and the power line unit SP whenviewed from the top, i.e., further from the edge of display device 1.The data line unit DP may be extended from the pad terminals in thesecond direction dr2, and the data line unit DP continuously extended inthe second direction dr2 may fan out where it overlaps with the commonelectrode CE in the non-display area NDA. The data line unit DP mayinclude a portion overlapping with the touch line unit TP and the powerline unit SP where it fans out. In an exemplary embodiment, the dataline unit DP may be disposed on the lowest layer, i.e., closer to thesubstrate than the touch line unit TP and the power line unit SP.

The data lines DP may be electrically connected to the transistors ofeach pixel disposed in the display area DA to provide data signal.

The data line unit DP may be formed as a single-layer, a dual-layer or atriple-layer made of a conductive metal selected from the groupconsisting of aluminum (Al), copper (Cu), molybdenum (Mo), chrome (Cr),titanium (Ti), tungsten (W), molybdenum-tungsten (MoW),molybdenum-titanium (MoTi) and copper/molybdenum-titanium (Cu/MoTi). Itis, however, to be understood that the present disclosure is not limitedthereto. the data line unit DP may be made of a variety of metals orconductors.

The common electrode CE may be formed throughout the entire display areaDA and may be extended beyond the display area DA to the non-displayarea NDA. One edge of the common electrode CE may be located in the mainregion MR of the display panel 10 adjacent to the boundary between themain region MR and the panel bending region BD.

The common electrode CE may be formed so that it covers the fan-outportion of the power line unit SP and the fan-out portion of the dataline unit DP. Accordingly, the common electrode CE may suppress theinfluence by a noise signal generated in the fan-out portion of thepower line unit SP and the fan-out portion of the data line unit DP onother elements.

Although the first to tenth touch lines TP1_1 to TP1_10 do not entirelyoverlap with the respective power lines SP1__1 to SP1_11 of the powerline unit SP in the drawings, the present disclosure is not limitedthereto. It is to be understood that the region where the touch lineunit TP are disposed may include the region overlapping with the regionwhere the power lines SP are formed. In other exemplary embodiments, thefirst to tenth touch lines TP1_1 to TP1_10 may be formed so as tooverlap with the power lines SP1__1 to SP1_11 of the power line unit SP,respectively. The numbers of the signal lines are not limited to thoseshown in the drawings but may be different.

FIG. 8 is a view showing a layout of portion 10 b of the display panelof FIG. 1 in more detail. FIG. 9 is a cross-sectional view of theorganic light-emitting display device, taken along line I3-I3′ of FIG.8.

Referring to FIGS. 8 and 9, an organic light-emitting display device 1includes at least one base substrate 101. For example, the organiclight-emitting display device 1 may include a second substrate 102facing the base substrate 101. It is, however, to be understood that thepresent disclosure is not limited thereto. The second substrate 102 maybe eliminated or replaced with another structure such as a film or alayer.

The base substrate 101 may be a flexible substrate. For example, thebase substrate 101 may be a film substrate including a polymer organicsubstance or a plastic substrate. For example, the base substrate 101may be formed of a material selected from the group consisting of:polystyrene, polyvinyl alcohol, polymethyl methacrylate,polyethersulfone, polyacrylate, polyetherimide, polyethylenenaphthalate, polyethylene terephthalate, polyphenylene sulfide,polyarylate, polyimide, polycarbonate, triacetate cellulose, andcellulose acetate propionate. In addition, the base substrate 101 mayinclude fiberglass reinforced plastic (FRP). It is, however, to beunderstood that the present disclosure is not limited thereto. The basesubstrate 101 may be a rigid substrate. Herein, the base substrate 101may be one of a glass substrate, a quartz substrate, a glass ceramicsubstrate, and a crystalline glass substrate.

A plurality of pixels, input sensing units and signal lines may bedisposed on the base substrate 101, whereby that the base substrate 101may include the display area DA and the non-display area NDA.

A buffer layer 111 is disposed on the base substrate 101. The bufferlayer 111 smoothens the surface of the base substrate 101 and preventsthe permeation of moisture or external air. The buffer layer 111 may bean inorganic layer. The buffer layer 111 may be made up of a singlelayer or multiple layers.

On the buffer layer 111, a plurality of thin-film transistors TR1, TR2and TR3 is disposed. The plurality of thin-film transistors TR1, TR2 andTR3 may be driving thin-film transistors. At least one of the thin-filmtransistors TR1, TR2 and TR3 may be disposed in each of the pixels. Thethin-film transistors TR1, TR2 and TR3 may include semiconductor layersA1, A2 and A3, gate electrodes GE1, GE2 and GE3, source electrodes SE1,SE2 and SE3, and drain electrodes DE1, DE2 and DE3, respectively.

More specifically, the semiconductor layers A1, A2 and A3 are disposedon the buffer layer 111. The semiconductor layers A1, A2 and A3 mayinclude amorphous silicon, poly silicon, and an organic semiconductor.In another exemplary embodiment, the semiconductor layers A1, A2 and A3may be oxide semiconductors. Although not shown in the drawings, thesemiconductor layer A1, A2 and A3 may include a channel region, and asource region and a drain region which are disposed on the sides of thechannel region, respectively, and are doped with impurities.

A first conductive layer is disposed on the gate insulating layer 112.The first conductive layer may include gate electrodes GE1, GE2 and GE3.The gate electrodes GE1, GE2 and GE3 may be formed of a conductive metalmaterial. For example, the gate electrodes GE1, GE2 and GE3 may includemolybdenum (Mo), aluminum (Al), copper (Cu) and titanium (Ti). The gateelectrodes GE1, GE2 and GE3 may be made of a single layer or multiplelayers.

A first interlayer dielectric layer 113 is disposed on the firstconductive layer. The first interlayer dielectric layer 113 may be aninorganic layer. The first interlayer dielectric layer 113 may be madeup of a single layer or multiple layers.

A first conductive layer is disposed on the gate insulating layer 112.The second conductive layer may include source electrodes SE1, SE2 andSE3 and drain electrodes DE1, DE2 and DE3. The source electrodes SE1,SE2 and SE3 and the drain electrodes DE1, DE2 and DE3 are formed of aconductive metal material. The source electrodes SE1, SE2 and SE3 andthe drain electrodes DE1, DE2 and DE3 may be in the same layer as thefirst line layers DP1_1 to DP1_10 and may be formed of the samematerial. The second conductive layer and the first line layers DP1_1 toDP1_10 may be formed together via the same masking process.

The source electrodes SE1, SE2 and SE3 and the drain electrodes DE1, DE2and DE3 may be electrically connected to the source regions and thedrain regions of the semiconductor layers A1, A2 and A3, respectively,through contact holes that pass through the interlayer dielectric layer113 and the gate insulating layer 112.

Although not shown in the drawings, the organic light-emitting displaydevice 1 may further include a storage capacitor and a switchingthin-film transistor on the buffer layer 111.

A second interlayer dielectric layer 114 is disposed on the secondconductive layer. The second interlayer dielectric layer 114 may be aninorganic layer. The second interlayer dielectric layer 114 may be madeup of a single layer or multiple layers.

A third conductive layer is disposed on the second interlayer dielectriclayer 114. The third conductive layer may include a connection electrode119 connecting the second conductive layer with a first pixel electrode121 to be described later. The connection electrode 119 may beelectrically connected to the drain electrodes DE1, DE2, DE3 (or thesource electrodes SE1, SE2, SE3) through via holes passing through thesecond interlayer dielectric layer 114. The third conductive layer maybe formed of the same material as the second conductive layer or may beformed of one of the above-listed materials or a combination thereof.

In another exemplary embodiment, the third conductive layer and thesecond interlayer dielectric layer 114 may be eliminated. In such case,the first conductive layer may be electrically connected directly to thefirst pixel electrode 121.

In another exemplary embodiment, the third conductive layer may be inthe same layer as the first line layers DP1_1 to DP1_10 described above.

A protective layer 115 is disposed on the third conductive layer. Theprotective layer 115 is disposed to cover the pixel circuitry includingthe thin-film transistors TR1, TR2 and TR3. The protective layer 115 maybe a passivation layer or a planarizing layer. The passivation layer mayinclude SiO2, SiNx, etc., and the planarization layer may includematerials such as acrylic and polyimide. The protective layer 115 mayinclude both the passivation layer and the planarization layer. In suchcase, a passivation layer may be disposed on the third conductive layer,and a planarization layer may be disposed on the passivation layer.

A plurality of first pixel electrodes 121 is disposed on the protectivelayer 115. Each of the first pixel electrodes 121 may be the anodeelectrode of an organic light-emitting diode disposed in each pixel.

The second interlayer dielectric layer 114 and/or the protective layer115 may form the above-described first line insulating layer 210. Thefirst line insulating layer 210 may have the same material and the samestack structure as the second interlayer dielectric layer 114 and/or theprotective layer 115.

The first pixel electrodes 121 may be electrically connected to theconnection electrode 119 through a via hole passing through thepassivation layer 115.

The first pixel electrodes 121 may be made of a material having a highwork function. The first pixel electrodes 121 may includeindium-tin-oxide (ITO), indium-zinc-oxide (IZO), zinc oxide (ZnO),indium oxide (In₂O₃), etc. The above-listed conductive materials have arelatively high work function and are transparent. When the organiclight-emitting display device is a top-emission organic light-emittingdisplay device, the first pixel electrodes 121 may further include areflective material such as silver (Ag), magnesium (Mg), aluminum (Al),platinum (Pt), palladium (Pb), gold (Au), nickel (Ni), neodymium (Nd),iridium (Jr), chrome (Cr), lithium (Li), calcium (Ca) or a combinationthereof, in addition to the above-listed conductive materials.Accordingly, the first pixel electrodes 121 may have a single-layerstructure including the above-listed conductive material and thereflective material, or may have a multi-layer structure in which thesingle layers are stacked on one another.

A pixel-defining layer PDL is disposed over the first pixel electrodes121. The pixel-defining layer PDL includes a plurality of openings. Atleast a part of each of the first pixel electrodes 121 is exposed viathe respective openings. The pixel-defining layer PDL may include anorganic material or an inorganic material. In an exemplary embodiment,the pixel-defining layer PDL may include a material such as aphotoresist, a polyimide resin, an acrylic resin, a silicon compound anda polyacrylic resin.

An organic emission layer 121 is disposed on the first electrode 122exposed by the pixel defining layer PDL.

A second pixel electrode 122 is disposed on the organic emission layer123. The second pixel electrode 123 may be a common electrode extendedacross all the pixels. In addition, the second pixel electrode 123 maywork as the cathode electrodes of organic light-emitting diode.

The second pixel electrode 123 may be made of a material having a lowwork function. The second pixel electrode 123 may include Li, Ca,LiF/Ca, LiF/Al, Al, Mg, Ag, Pt, Pd, Ni, Au, Nd, Ir, Cr, BaF, Ba, or acompound or mixture thereof, e.g., a mixture of Ag and Mg. The secondpixel electrode 123 may further include an auxiliary electrode. Theauxiliary electrode may include a layer formed by depositing thematerial, and a transparent metal oxide on the layer such asindium-tin-oxide (ITO), indium-zinc-oxide (IZO), zinc oxide (ZnO) andindium-tin-zinc-oxide (ITZO).

When the organic light-emitting display device 1 is a top-emissionorganic light-emitting display device, a thin conductive layer having asmall work function may be formed as the second pixel electrode 123, anda transparent conductive layer such as indium-tin-oxide (ITO) layer, anindium-zinc-oxide (IZO) layer, a zinc oxide (ZnO) layer and an indiumoxide (In₂O₃) layer may be formed thereon.

The above-described first pixel electrodes 121, the organic emissionlayer 122 and the second electrode 123 may form an organiclight-emitting diode.

The first pixel electrodes 121 and the second pixel electrode 123 may beelectrically connected to the power line unit SP. The power line unit SPmay be formed, but is not limited to being, on the same layer as thefirst pixel electrodes 121 or the second pixel electrode 123.

On the second pixel electrode 123, encapsulation layers 131 a, 131 b and131 c are disposed. The encapsulation layers 131 a, 131 b and 131 cinclude inorganic layers. The encapsulation layers 131 a, 131 b, and 131c may include a stack of layers. Although not shown in the drawings, theencapsulation layers 131 a, 131 b and 131 c may be made up of multiplelayers including a first inorganic layer 131 a, an organic layer 131 b,and a second inorganic layer 131 c which are stacked on one another inthis order. The first inorganic layer 131 a and the second inorganiclayer 131 c may include one or more selected from the group consistingof: silicon oxide (SiOx), silicon nitride (SiNx) and silicon oxynitride(SiONx). The organic layer 131 b may include one selected from the groupconsisting of epoxy, acrylate and urethane acrylate.

An input sensing layer is disposed on the encapsulation layers 131 a,131 b and 131 c. The encapsulation layers 131 a, 131 b and 131 c may bein contact with the input sensing layer. The input sensing layer mayinclude an input sensing unit for sensing a user's touch input.Hereinafter, the input sensing unit will be described in detail.

The input sensing unit includes a plurality of first sensing electrodesRX, a plurality of second sensing electrodes TX, and a plurality oftouch lines TP. The first sensing electrodes RX may be sensingelectrodes or driving electrodes, while the second sensing electrodes TXmay be driving electrodes or sensing electrodes. For example, in anexemplary embodiment, the first sensing electrodes RX may be sensingelectrodes and the second sensing electrodes TX may be drivingelectrodes.

The input sensing unit includes a plurality of sensor blocks SB arrangedin the display area DA. The sensor blocks SB may define a plurality ofsensor rows or a plurality of sensor rows. The plurality of sensorcolumns may be arranged in the second direction dr2. The plurality ofsensor columns may be arranged in the first direction dr1. For the sakeof clarity, only the sensor block SB in the first column and the firstrow is labeled in the drawing.

Each of the plurality of sensor blocks SB includes a first sensingelectrode RX11 and i second sensing electrodes TX adjacent to the firstsensing electrode RX11 and arranged in a predetermined direction, wherei is a natural number equal to or greater than two. In the example shownin FIG. 8, i is five, i.e., five second sensing electrodes TX11 a toTX11 e are shown. The i second sensing electrodes TX11 a to TX11 e formone sensor group. The second sensing electrodes TX11 a to TX11 e may bearranged in the substantially the same direction as the direction inwhich first sensing electrode RX11 is extended.

When the second sensing electrodes TX11 a to TX11 e receive a detectionsignal (or a transmission signal) for detecting an external input, thefirst sensing electrode RX11 may be capacitively coupled with the secondsensing electrodes TX11 a to TX11 e. When an input means is placed onone second sensing electrode TX among the capacitively-coupled secondsensing electrodes TX11 a to TX11 e, the capacity between the firstsensing electrode RX and the second sensing electrode TX may be changed.The input sensing circuit (not shown) may calculate the coordinateinformation of the input means by detecting the changed capacity fromthe second sensing electrode TX. In an exemplary embodiment, the firstsensing electrode RX may receive a detection signal for detecting anexternal input. The input sensing circuit may detect the changedcapacity from the second sensing electrode TX to calculate thecoordinate information of the input means.

The connective relationship between the plurality of sensor blocks SBand the plurality of touch line units TP will be described. Theconnective relationship between the plurality of sensor blocks SB andthe plurality of touch line units TP will be described with reference tothe first sensor row.

The touch line units TP may include a plurality of first sub-line unitsand a plurality of second sub-line units. The first sub-line units areconnected to the first sensing electrodes RX11 to RX15 of the sensorblocks SB of the first sensor row ISC1, respectively. The first sub-lineunits may be the first to fifth touch lines TP1_1 to TP1_5 describedabove.

The second sub-line units are used to connect the j^(th) one of the isecond sensing electrodes TX11 to TX15 at the n^(th) sensor block amongthe sensor blocks SB at the sensor column, with the (i−j+1)^(th) one ofthe i second sensing electrode TX11 to TX15 at the (n+1)^(th) sensorblock, where j is a natural number equal to or greater than one andequal to or less than i. Hereinafter, a detailed description will bemade with reference to five second sub-line units at the first sensorcolumn.

One of the second sub-line units connects the first one of the secondsensing electrodes TX11 a of the first sensor block SB, the fifth one ofthe second sensing electrodes TX12 e of the second sensor block SB, thefirst one of the second sensing electrodes TX13 a of the third sensorblock SB, the fifth one of the second sensing electrodes TX14 e of thefourth sensor block SB, and the first one of the second sensingelectrodes TX15 a of the fifth sensor block SB.

Another of the second sub-line units is used to connect the second oneof the second sensing electrodes TX11 b of the first sensor block SB,the fourth one of the second sensing electrodes TX12 d of the secondsensor block SB, the second one of the second sensing electrodes TX13 bof the third sensor block SB, the fourth one of the second sensingelectrodes TX14 b of the fourth sensor block SB, and the second one ofthe second sensing electrodes TX15 b of the fifth sensor block SB.

Yet another of the second sub-line units is used to connect the thirdone of the second sensing electrode TX11 c to TX15 c at the first tofifth sensor blocks.

Yet another of the second sub-line units is used to connect the fourthone of the second sensing electrodes TX11 d of the first sensor blockSB, the second one of the second sensing electrodes TX12 b of the secondsensor block SB, the fourth one of the second sensing electrodes TX13 dof the third sensor block SB, the second one of the second sensingelectrodes TX14 b of the fourth sensor block SB, and the fourth one ofthe second sensing electrodes TX15 d of the fifth sensor block SB.

Yet another of the second sub-line units is used to connect the fifthone of the second sensing electrodes TX11 e of the first sensor blockSB, the first one of the second sensing electrodes TX12 a of the secondsensor block SB, the fifth one of the second sensing electrodes TX133 ofthe third sensor block SB, the first one of the second sensingelectrodes TX14 a of the fourth sensor block SB, and the fifth one ofthe second sensing electrodes TX15 e of the fifth sensor block SB.

The second sub-line units may be the sixth to tenth touch lines TP1_6 toTP1_10 described above.

The input sensing layer includes sensing electrode layers RX and TX, afirst sensing insulating layer 141 disposed on the sensing electrodelayers RX and TX, a touch line layer TP disposed on the first sensinginsulating layer 141, and a second sensing insulating layer 142 disposedon the touch line layer TP.

According to an exemplary embodiment of the present disclosure, thesensing electrode layers RX and TX may be disposed directly on theencapsulation layers 131 a, 131 b, and 131 c. It is, however, to beunderstood that the present disclosure is not limited thereto. Accordingto another exemplary embodiment of the present disclosure, a base may beinterposed between the encapsulation layers 131 a, 131 b and 131 c andthe sensing electrode layers RX and TX. The base 7111 may be made of,for example, glass or plastic such as polyethylene terephthalate (PET),polyimide (PI), polycarbonate (PC), polyethylene (PE), polypropylene(PP), polysulfone (PSF), polymethylmethacrylate (PMMA),triacetylcellulose (TAC) and cycloolefin polymer (COP).

The sensing electrode layers RX and TX may be made of a conductivematerial. The sensing electrode layers RX and TX may include atransparent conductive oxide such as indium tin oxide (ITO), indium zincoxide (IZO), zinc oxide (ZnO) and indium tin zinc oxide (ITZO).

The first sensing insulating layer 141 may include a silicon compound, ametal oxide, etc. The first sensing insulating layer 141 may include acontact hole via which a part of the sensing electrode layers isexposed.

The touch line layer TP may be electrically connected directly to thesensing electrode layers through the contact hole passing through thefirst sensing insulating layer 141.

The second sensing insulating layer 142 may include the same material asthe first sensing insulating layer 141. In another exemplary embodiment,the second sensing insulating layer 142 may be eliminated.

The first sensing insulation layer 141 and/or the encapsulation layers131 a, 131 b and 131 c may form the second line insulating layer 220,and the second sensing insulating layer 142 may form the third lineinsulating layer 230.

The second substrate 102 may be disposed on the input sensing layer. Thesecond substrate 102 may be implemented as a transparent substrate suchas glass or plastic. The second substrate 102 may be a window substrate,a sealing substrate, or a protective substrate.

Although not shown in the drawings, an adhesive layer may be disposedbetween the input sensing layer and the second substrate 102. Theadhesive layer is interposed between the input sensing layer and thesecond substrate 102 to couple the input sensing layer with the secondsubstrate 102. The adhesive layer 150 may include a film havingadhesiveness, e.g., optically clear adhesive (OCA). As another example,the adhesive layer may include an optically clear resin (OCR). Theadhesive layer and the second substrate 102 may be eliminated in otherimplementations.

Hereinafter, an organic light-emitting display device according toanother exemplary embodiment of the present disclosure will bedescribed. The elements already described above with respect to FIGS. 1to 9 will not be described again. In addition, like reference numeralsmay denote features analogous to those described above with reference toFIGS. 1 to 9.

FIG. 10 is a view showing a layout of input sensing units of an organiclight-emitting display device according to another exemplary embodimentof the present disclosure. FIG. 10 shows a modification of the exemplaryembodiment shown in FIG. 8.

An organic light-emitting display device according to the exemplaryembodiment shown in FIG. 10 is substantially identical to the organiclight-emitting diode display device according to the exemplaryembodiment shown in FIG. 8 except the shape and arrangement of the firstsensing electrode RX and the second sensing electrode TX.

The input sensing unit may include a plurality of first sensingelectrodes RX, a plurality of second sensing electrodes TX, and a touchline unit TP connected to the respective touch electrodes. The firstsensing electrodes RX and the second sensing electrodes TX may acquireinformation of a position where a touch has been made byself-capacitance sensing and/or mutual-capacitance sensing.

The first sensing electrodes RX and the second sensing electrodes TX maybe arranged in a matrix. Each of the first sensing electrodes RX and thesecond sensing electrodes TX may have, but is not limited to, a diamondshape. The first sensing electrodes RX may be electrically connected toone another in the first direction d1, and the second sensing electrodesTX may be electrically connected to one another in the second directiond2. It is, however, to be understood that the present disclosure is notlimited thereto. The first sensing electrodes RX may be electricallyconnected to one another in the column direction, and the second sensingelectrodes TX may be electrically connected to one another in the rowdirection. The first sensing electrodes RX and the second sensingelectrodes TX are insulated from one another.

The first sensing electrodes RX and the second sensing electrodes TX maybe arranged in the same layer. Each of the first sensing electrodes RXor the second sensing electrodes TX may be physically separated from anadjacent sensing electrode by the sensing electrode of the secondsensing electrodes TX or the first sensing electrode RX. In such case,the sensing electrode adjacent to the other sensing electrode may beconnected by a bridge electrode.

FIG. 11 is a view showing a layout of an input sensing unit of anorganic light-emitting display device according to yet another exemplaryembodiment of the present disclosure. FIG. 11 shows a modification ofthe exemplary embodiment shown in FIG. 8.

An organic light-emitting display device according to the exemplaryembodiment shown in FIG. 11 is substantially identical to the organiclight-emitting diode display device according to the exemplaryembodiment shown in FIG. 8 except the shape and arrangement of the firstsensing electrode RX and the second sensing electrode TX.

The first sensing electrodes RX and the second sensing electrodes TX mayhave a mesh shape. Since the first sensing electrodes RX and the secondsensing electrodes TX have a mesh shape, the parasitic capacitance withthe electrodes in the display area DA can be reduced. In addition, thefirst sensing electrodes RX and the second sensing electrodes TX may bedisposed such that they overlap the pixel-defining layer PDL, and thusthey may not be visible to a user who uses the organic light-emittingdisplay device.

The first sensing electrodes RX and the second sensing electrodes TX inthe mesh shape may include, but is not limited to, silver, aluminum,copper, chromium, nickel, titanium, etc. that can be processed at a lowtemperature. Accordingly, it is possible to prevent damage to theorganic light-emitting display device even if the input sensing unit isformed via continuous processes.

FIG. 12 is a view showing arrangement of lines in a non-display area ofan organic light-emitting display device according to yet anotherexemplary embodiment of the present disclosure. FIG. 12 shows amodification of the exemplary embodiment shown in FIG. 3.

An organic light-emitting display device according to the exemplaryembodiment shown in FIG. 12 is substantially identical to the organiclight-emitting display device according to the exemplary embodimentshown in FIG. 3 except that the former further includes third and fourthtouch line units TP3 and TP4 and third and fourth power line units SP3and SP4 disposed on the inner side of the data line unit DP.

According to the exemplary embodiment of the present disclosure, thefirst and second touch line units TP1 and TP2 and the first and secondpower line units SP1 and SP2 may be disposed more to the outside thanthe data line unit DP on one side and the opposite side in the firstdirection dr1, like above-described exemplary embodiment.

The organic light-emitting display device may further include third andfourth touch line units TP3 and TP4 and third and fourth power lineunits SP3 and SP4. The third touch line unit TP3 and the third powerline unit SP3 may include an overlapping portion in the second directiondr2. In addition, the fourth touch line unit TP4 and the fourth powerline unit SP3 may include an overlapping portion in the second directiondr2.

The third touch line unit TP3 and the fourth touch line unit TP4 mayform a fan-out portion. In each of the touch line units TP1 to TP4, thenumber of touch lines extended toward one side in the first directiondr1 may be equal to the number of touch lines extended toward theopposite side in the first direction dr1. In addition, in each of thetouch line units TP1 to TP4, the distance between the touch linesextended toward one side in the first direction dr1 and one edge of thecommon electrode CE may be equal to the distance between the touch linesextended toward the opposite side in the first direction dr1 and theedge of the common electrode CE.

In concluding the detailed description, those skilled in the art willappreciate that many variations and modifications can be made to thepreferred embodiments without substantially departing from theprinciples of the present disclosure. Therefore, the disclosed preferredembodiments of the invention are used in a generic and descriptive senseonly and not for purposes of limitation.

What is claimed is:
 1. A display device comprising: a display area; anon-display area on an outer side of the display area; a data line unitcomprising a plurality of data lines; a power line unit disposed overthe plurality of data lines and comprising a plurality of power lines;and a touch line unit disposed over the power line unit, comprising aplurality of touch lines and comprising a fan-out portion, wherein thetouch line unit comprises, in the fan-out portion, a plurality of firstsub-touch line units extended toward one side in a first direction, anda plurality of second sub-touch line units extended toward an oppositeside in the first direction, wherein a number of lines of the firstsub-touch line units is equal to a number of lines of the secondsub-touch line units, and wherein the touch line unit comprises aportion where the touch line unit overlaps with the power line unit. 2.The display device of claim 1, wherein the touch line unit and the powerline unit are extended in a second direction intersecting the firstdirection in the portion where the touch line unit overlaps with thepower line unit.
 3. The display device of claim 2, wherein the portionwhere the touch line unit overlaps with the power line unit is locatedon an inner side of the data line unit.
 4. The display device of claim1, further comprising: a common electrode formed over an entire surfaceof the display area, wherein the common electrode is extended to thenon-display area.
 5. The display device of claim 4, wherein a regionwhere the common electrode is formed comprises the fan-out portion. 6.The display device of claim 5, wherein the common electrode comprises anedge formed in the first direction, wherein the plurality of firstsub-touch line units comprises a first touch line closest to the edge inthe fan-out portion, wherein the plurality of second sub-touch lineunits comprises a second touch line closest to the edge in the fan-outportion, and wherein a distance between the first touch line and theedge is equal to a distance between the second touch line and thedevice.
 7. The display device of claim 6, wherein the distance is equalto or greater than 72 μm.
 8. The display device of claim 4, wherein thecommon electrode is electrically connected to at least one power lineamong the power line unit.
 9. The display device of claim 1, furthercomprising: a data pad terminal unit connected to the data lines; apower pad terminal unit connected to the power lines; and a touch padterminal unit connected to the touch lines, wherein the touch padterminal unit, the power pad terminal unit, and the data pad terminalunit are sequentially spaced apart from one another in the firstdirection.
 10. The display device of claim 9, wherein the data lines areextended in a second direction intersecting the first direction from thedata pad terminal unit, and wherein the touch lines comprise a portionextended in the second direction and a portion bent toward the data lineunit.
 11. The display device of claim 9, wherein the display devicecomprises a region adjacent to one edge of the non-display area, wherethe data pad terminal unit, the power pad terminal unit and the touchpad terminal unit are formed, and wherein the display device comprises abending region between the display area and the region where the datapad terminal unit, the power pad terminal unit and the touch padterminal unit are formed.
 12. The display device of claim 11, whereinthe display device comprises in the bending region a region where thetouch line unit overlaps with the power line unit.
 13. The displaydevice of claim 1, further comprising: a plurality of touch sensingelectrodes disposed in the display area, wherein the plurality of touchsensing electrodes comprises: a plurality of first touch sensingelectrodes extended in a predetermined direction; and a plurality ofsecond touch sensing electrodes disposed adjacent to the first touchsensing electrodes in a direction intersecting the direction in whichthe plurality of first touch sensing electrodes is extended, wherein awidth of the second touch sensing electrodes is smaller than a width ofthe first touch sensing electrodes, and wherein the plurality of firsttouch sensing electrodes and the plurality of second touch sensingelectrodes are electrically connected to the respective touch lines. 14.The display device of claim 13, wherein the plurality of second touchsensing electrodes is extended in a same direction as a direction inwhich the plurality of first touch sensing electrodes is extended. 15.The display device of claim 13, wherein the plurality of second touchsensing electrodes is extended in a second direction intersecting thefirst direction.
 16. A display device comprising: a base substratecomprising a display area where a plurality of pixels and a plurality oftouch electrodes are disposed, and a non-display area on an outer sideof the display area; a first line layer disposed on the base substratein the non-display area; a second line layer disposed over the firstline layer in the non-display area; and a third line layer disposed overthe second line layer in the non-display area and comprising a fan-outportion, wherein the second line layer and the third line layer comprisean overlapping region in the non-display area, wherein each of thepixels comprises a transistor and a light-emitting element connected tothe transistor, wherein the first line layer is electrically connectedto the transistor, wherein the second line layer is electricallyconnected to the light-emitting element, wherein the third line layer iselectrically connected to the touch electrode, wherein the third linelayer comprises, in the fan-out portion, a plurality of first sub-lineunit units extended toward one side in a first direction, and aplurality of second sub-line unit units extended toward an opposite sidein the first direction, and wherein a number of the first sub-line unitunits is equal to a number of the second sub-line unit.
 17. The displaydevice of claim 16, wherein the first line layer, the second line layerand the third line layer are insulated from one another.
 18. The displaydevice of claim 16, wherein in a region where the second conductivelayer overlaps with the third conductive layer, the second conductivelayer and the third conductive layer are extended in a second directionintersecting the first direction.
 19. The display device of claim 18,wherein the touch electrodes comprise: a plurality of first sensingelectrodes extended in the first direction; and a plurality of secondsensing electrodes extended in the second direction and traversing thefirst sensing electrodes, wherein the first sensing electrodes areinsulated from the second sensing electrodes.
 20. The display device ofclaim 16, wherein the light-emitting element comprises a firstelectrode, an emissive layer disposed on the first electrode, and asecond electrode disposed on the emissive layer, wherein the secondelectrode is disposed through an entire surface of the display area,wherein the second electrode is extended so that the third line layercovers the fan-out portion, and wherein the second line layer iselectrically connected to the second electrode.